//
// Base styles
//

.btn {
	display: inline-block;
	font-weight: @btn-font-weight;
	text-align: center;
	white-space: nowrap;
	vertical-align: middle;
	user-select: none;
	border: @btn-border-width solid transparent;
	.button-size(@btn-padding-y, @btn-padding-x, @body-font-size, @btn-line-height, @btn-border-radius);
	transition: @btn-transition;

	// Share hover and focus styles
	&:hover,
	&:focus {
		text-decoration: none;
	} ;

	&:focus,
	&.focus {
		outline: 0;
		box-shadow: @btn-focus-box-shadow;
	}

	// Disabled comes first so active can properly restyle
	&.disabled,
	&:disabled {
		opacity: @btn-disabled-opacity;
		box-shadow: none;
	}

	// Opinionated: add "hand" cursor to non-disabled .btn elements
	&:not(:disabled):not(.disabled) {
		cursor: pointer;
	}

	&:not(:disabled):not(.disabled):active,
	&:not(:disabled):not(.disabled).active {
		background-image: none;
		box-shadow: @btn-active-box-shadow;

		&:focus {
			box-shadow: @btn-focus-box-shadow, @btn-active-box-shadow;
		}
	}
}

// Future-proof disabling of clicks on `<a>` elements
a.btn.disabled,
fieldset:disabled a.btn {
	pointer-events: none;
}


//
// Alternate buttons
//

.btn-primary {
	.button-variant(@primary, @primary, @white);
}

.btn-secondary {
	.button-variant(@secondary, @secondary, @white);
}

.btn-success {
	.button-variant(@success, @success, @white);
}

.btn-danger {
	.button-variant(@danger, @danger, @white);
}

.btn-warning {
	.button-variant(@warning, @warning, @dark);
}

.btn-info {
	.button-variant(@info, @info, @white);
}

.btn-light {
	.button-variant(@light, @light, @dark);
}

.btn-dark {
	.button-variant(@dark, @dark, @white);
}

.btn-outline-primary {
	.button-outline-variant(@primary, @white);
}

.btn-outline-secondary {
	.button-outline-variant(@secondary, @white);
}

.btn-outline-success {
	.button-outline-variant(@success, @white);
}

.btn-outline-danger {
	.button-outline-variant(@danger, @white);
}

.btn-outline-warning {
	.button-outline-variant(@warning, @dark);
}

.btn-outline-info {
	.button-outline-variant(@info, @white);
}

.btn-outline-light {
	.button-outline-variant(@light, @dark);
}

.btn-outline-dark {
	.button-outline-variant(@dark, @white);
}


//
// Link buttons
//

// Make a button look and behave like a link
.btn-link {
	font-weight: @font-weight-normal;
	color: @link-color;
	background-color: transparent;

	&:hover {
		color: @link-hover-color;
		text-decoration: @link-hover-decoration;
		background-color: transparent;
		border-color: transparent;
	};

	&:focus,
	&.focus {
		text-decoration: @link-hover-decoration;
		border-color: transparent;
		box-shadow: none;
	}

	&:disabled,
	&.disabled {
		color: @btn-link-disabled-color;
		pointer-events: none;
	}

	// No need for an active state here
}


//
// Button Sizes
//

.btn-lg {
	.button-size(@btn-padding-y-lg, @btn-padding-x-lg, @font-size-lg, @btn-line-height-lg, @btn-border-radius-lg);
}

.btn-sm {
	.button-size(@btn-padding-y-sm, @btn-padding-x-sm, @font-size-sm, @btn-line-height-sm, @btn-border-radius-sm);
}


//
// Block button
//

.btn-block {
	display: block;
	width: 100%;

	// Vertically space out multiple block buttons
	+ .btn-block {
		margin-top: @btn-block-spacing-y;
	}
}

// Specificity overrides
input[type="submit"],
input[type="reset"],
input[type="button"] {
	&.btn-block {
		width: 100%;
	}
}
